Microstructural Master Alloys Features of Aluminum–Erbium System

Aluminum master alloys with rare earth metals are widely studied by many scientists around the world, but research on the production of Al-Er master alloys is still limited. The purpose of this work is to study the microstructure parameters of aluminum-erbium master alloys obtained by metallothermic...

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Autores principales:	Sergey Savchenkov, Yaroslav Kosov, Vladimir Bazhin, Kirill Krylov, Rudolf Kawalla
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	aluminum alloys master alloy erbium aluminothermic reduction flux microstructure Crystallography QD901-999
Acceso en línea:	https://doaj.org/article/2780711b6982476698f2e6c21827a31c
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spelling	oai:doaj.org-article:2780711b6982476698f2e6c21827a31c2021-11-25T17:18:43ZMicrostructural Master Alloys Features of Aluminum–Erbium System10.3390/cryst111113532073-4352https://doaj.org/article/2780711b6982476698f2e6c21827a31c2021-11-01T00:00:00Zhttps://www.mdpi.com/2073-4352/11/11/1353https://doaj.org/toc/2073-4352Aluminum master alloys with rare earth metals are widely studied by many scientists around the world, but research on the production of Al-Er master alloys is still limited. The purpose of this work is to study the microstructure parameters of aluminum-erbium master alloys obtained by metallothermic reduction of salt mixtures containing erbium oxide or fluoride. The structural features were investigated by optical and scanning electron microscopy, and the dependence of the microhardness of the eutectic and solid solution fields of obtained master alloys on the content of erbium in the master alloy was determined. Studies have shown that master alloys obtained by metallothermic reduction of erbium compounds from chloride–fluoride melts are characterized by a uniform distribution of Al<sub>3</sub>Er intermetallic compounds in the volume of double eutectic [(Al) + Al<sub>3</sub>Er] and have a strong grain refinement effect. The analysis of the microstructure showed that the structure of the master alloys varies depending on the content of erbium. When the content of erbium in the master alloy is up to 6 wt.%, the eutectic structure is preserved. When the content of erbium in the master alloy is 8 wt.% or more, the structure becomes a solid solution with individual inclusions of various shapes and intermetallic compounds.Sergey SavchenkovYaroslav KosovVladimir BazhinKirill KrylovRudolf KawallaMDPI AGarticlealuminum alloysmaster alloyerbiumaluminothermic reductionfluxmicrostructureCrystallographyQD901-999ENCrystals, Vol 11, Iss 1353, p 1353 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	aluminum alloys master alloy erbium aluminothermic reduction flux microstructure Crystallography QD901-999
spellingShingle	aluminum alloys master alloy erbium aluminothermic reduction flux microstructure Crystallography QD901-999 Sergey Savchenkov Yaroslav Kosov Vladimir Bazhin Kirill Krylov Rudolf Kawalla Microstructural Master Alloys Features of Aluminum–Erbium System
description	Aluminum master alloys with rare earth metals are widely studied by many scientists around the world, but research on the production of Al-Er master alloys is still limited. The purpose of this work is to study the microstructure parameters of aluminum-erbium master alloys obtained by metallothermic reduction of salt mixtures containing erbium oxide or fluoride. The structural features were investigated by optical and scanning electron microscopy, and the dependence of the microhardness of the eutectic and solid solution fields of obtained master alloys on the content of erbium in the master alloy was determined. Studies have shown that master alloys obtained by metallothermic reduction of erbium compounds from chloride–fluoride melts are characterized by a uniform distribution of Al<sub>3</sub>Er intermetallic compounds in the volume of double eutectic [(Al) + Al<sub>3</sub>Er] and have a strong grain refinement effect. The analysis of the microstructure showed that the structure of the master alloys varies depending on the content of erbium. When the content of erbium in the master alloy is up to 6 wt.%, the eutectic structure is preserved. When the content of erbium in the master alloy is 8 wt.% or more, the structure becomes a solid solution with individual inclusions of various shapes and intermetallic compounds.
format	article
author	Sergey Savchenkov Yaroslav Kosov Vladimir Bazhin Kirill Krylov Rudolf Kawalla
author_facet	Sergey Savchenkov Yaroslav Kosov Vladimir Bazhin Kirill Krylov Rudolf Kawalla
author_sort	Sergey Savchenkov
title	Microstructural Master Alloys Features of Aluminum–Erbium System
title_short	Microstructural Master Alloys Features of Aluminum–Erbium System
title_full	Microstructural Master Alloys Features of Aluminum–Erbium System
title_fullStr	Microstructural Master Alloys Features of Aluminum–Erbium System
title_full_unstemmed	Microstructural Master Alloys Features of Aluminum–Erbium System
title_sort	microstructural master alloys features of aluminum–erbium system
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/2780711b6982476698f2e6c21827a31c
work_keys_str_mv	AT sergeysavchenkov microstructuralmasteralloysfeaturesofaluminumerbiumsystem AT yaroslavkosov microstructuralmasteralloysfeaturesofaluminumerbiumsystem AT vladimirbazhin microstructuralmasteralloysfeaturesofaluminumerbiumsystem AT kirillkrylov microstructuralmasteralloysfeaturesofaluminumerbiumsystem AT rudolfkawalla microstructuralmasteralloysfeaturesofaluminumerbiumsystem
_version_	1718412519292272640

Microstructural Master Alloys Features of Aluminum–Erbium System

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